It looks like a Mona Morales-Schildt piece, but I thought SS was her code (at least it is on Ventana pieces). I can't seem to find a good list of the codes for 50'-60's Kosta. John or Martyn: can you suggest a source.

Good point, according to data in Smoke & Ice the code for Mona Morales-Schildt designs is SS (the book offers little further help). Given that the company has changed the format for their codes several times maybe an email to the current company would bear fruit: info@kostaboda.se

Thanks all - think Martyn was spot on. Searching online, there's several Mona Morales Schildt pieces which all carry the 'SH' code, couple of examples below. Also seen one very similar to my piece, although in a slightly larger size, which as John suggests the numbering after the pattern code, would appear to refer to size variations.

Whilst typing this thread, just came across a couple of the Ventana examples on the web and I see what David means, these pieces confusingly do seem to carry the SS mark. I pretty sure that the 'SH' mark does belong to Mona Morales Schildt, however, am still slightly puzzled while the Ventana pieces are marked SS. I wonder if it was something specific to do with the Ventana Range..?

Quite often more information, brings more questions! - sure a quick email to Kosta will sort this one out.

This follows the same logic as e.g. the pieces made by Vicke Lindstrand. The "S" indicates Morales-Schildt just like the "L" signals Lindstrand, and the "H" indicates hand-formed/uncut while the "S" indicates cut. So the difference here is that e.g. the Ventana pieces have been cut, while this bowl has not.

Following on from that does anybody know what 'Sa. S' means. I'm pretty sure it's a Mona M-S piece, it's a two colour bowl with mirror cuts, but I cant work out (or find another example of) the 'Sa' part.